It’s important to know how things work in the Swamp.
They were moved from NSC to NARA. So the NSC cannot provide documents they don’t control. NARA has them, under government control at their facility in Chicago or their secured facility in DC.
Of course any good bureaucrat will tell you if the form is not completed perfectly, it will be rejected.
But this isn’t as nefarious as the article would lead you to believe. It is important to understand how stuff works.